Eliminate useless string copy

Crayon2000 · Nov 10, 2024 · 29a0c84 · 29a0c84
1 parent 5850eb3
commit 29a0c84
Showing 1 changed file with 9 additions and 3 deletions.
diff --git a/source/vpad_to_json.cpp b/source/vpad_to_json.cpp
@@ -215,9 +215,15 @@ void pad_to_json(PADData pad_data, char* out, uint32_t out_size)
     }
 
     // Convert to string
-    char* s = json_dumps(root, JSON_COMPACT | JSON_REAL_PRECISION(10));
-    strncpy(out, s, out_size);
-    free(s);
+    const size_t real_size = json_dumpb(root, out, out_size, JSON_COMPACT | JSON_REAL_PRECISION(10));
+    if(real_size < out_size)
+    {
+        out[real_size] = '\0';
+    }
+    else
+    {
+        out[0] = '\0';
+    }
 
     json_decref(root);
 }